Pritzker Family Sells 51% Stake in TransUnion

By

Peter Lattman And

Mark Maremont

Updated April 29, 2010 7:50 p.m. ET

The Pritzker family said Thursday it has sold a 51% stake in closely held TransUnion LLC to private-equity firm Madison Dearborn Partners LLC, in a deal valuing the consumer credit-reporting company at more than $2 billion, according to people familiar with the deal.

The deal is the latest of a series of sales by Chicago's Pritzker family, which controls a business empire founded by Nicholas J. Pritzker more than a century ago.